Each of your votes helps to slowly transform abstract shapes into human faces. This is evolution driven by artificial selection.

Artificial selection is the mechanism which transformed wild crops into supermarket vegetables and wolves into domestic dogs.

In October 2007 Philipp Lenssen launched Mutating Pictures, an online experiment in the tradition of Richard Dawkins' The Blind Watchmaker programme.

Face Maker is a variant of Philipp's system that uses a different scoring mechanism and drawing algorithm. Images are pitted directly against one another to determine which ones look the most like faces. Images that win these battles 'give birth' to child faces with slight mutations.

Each time new faces are born, a corresponding number of old faces are removed. Faces that fare badly in competitions are removed first.